Acid wool-dyestuff of the anthraquionone series and process of making same



Patented Sept. 19, 1933 A011) WOOIl-DYESTUFF OF THE ANTHRAL.

QUINONE SERIES AND PROCESS OF MAK- ING SAM Georg Kalischer, Frankfort-on-the-Main, Ernst Honold, Frankfort-on-the-Main-Fechenheim,

v Heinrich Clingestein,

vCologne- 'on-the-Rhine,

and Karl Dobmaier, Leverkusen-on-the-Rhine,

G rman Inc., New

; ware assignors to General Aniline York, N. Y., a corporation of Dela- Works,

No' Drawing. Application July 7, 1930, Serial N5. I

466,346, and in Germany July 17, 1929- 'Claims. ((1260-60) Our present invention relates to' acid wooldyestuffs of the anthraquinone series and to a process of making same.

" This process comprises treating with acylating v I 5 agents an 1-amino-4-aryl amino-anthraquinone- 2-sulfonic acid of the general formula:

NHRNHX wherein R. means a residue of the benzene series and X hydrogen, alkyl or cycloalkyl.

Suitable acylating agents are for instance acid anhydrides, carboxylic or sulfonic acid chlorides such as acetyl-chloride, monoand dichloro-ace- -ty1-chloride, acetic anhydride, benzo'yl-chloride, benzene-sulfochloride, phthalic anhydride.

When an acid chloride is used, an acid-binding zoyl-chloride, phthalic-anhydride I acylation agents analogous products are obtained.

agent may be added with advantage. The process may be carried out either in an aqueous mediorganic solvent particularly an organic base.

By the acylation of anthraquinone dyestuffs- Which is the object of our present invention, dyestufis are 'obtain'edwhich are distinguished from the starting materials by' a more bluish shade and by improved tinctorial properties, especially as regards levelling.

They correspond probably to the general formula: I I

um or by using dried starting materials in an amino-anthraquinone-Z-sulfonic acid, obtained by condensation of l-amino-4bromo-anthraquinone-2-sulfonic acid with p-phenylene-diamine, are dissolved in about 1000 parts' vof hot water and at 6040," acetic-anhydride is, slowly added until complete acetylation of the one amino-group; Thereby the original greenish blue color of the solution turns to a more bluish, color. The formed dyestufi is salted outby means of'sodium chloride. It corresponds to the formula: 5

fl) NH;

("y 1 IHONH'CooH3 The coloration of its solution in concentrated sulfuric acid is greenish blue. It dyes the animal fiber very equal greenish blueshades.

Byemploying instead of acetic-anhydride, bensimilar The dyestuff obtained in an analogous manner by acetylation ofthe condensation product 1amino-4- bromo-anthraquinone-2-sulfonic acid and m-phenylene-diamine dyes wool from an acid bath pure blue shades. 1

' Example 2' 20 parts of the dyestufi, obtained by condensation of 1-amino-4-bromo-anthraquinone-2-sulfonic acid with benzidine, are treated with aceticb 35 f NHZ anhydride according to Example ,1 and worked J up as there described. The acetylated dyestuff 9 corresponds to the formula: 2

I --.o -NH1,

X Y 1 any 35 acyl (wherein Band X have the above signification). Of a special valueare those of these dyestuifs 0. b P which contain halogen in their acyl-residue. .3

In order to further illustrate our invention they i Ql m:mncentratedlWHurm acid with following examples are given, the parts being by a q ish P1Ql}, l 9 becomfis e the Weight and all temperatures in'centigrade deadditlo'n of pamiormaldehyde- TheuYemgon grees, but we wish it however to be understood, W001 from an .acld P h 1 full greemsh, l that our invention is not limited to the particular d iq a e el fastness- X I W products nor reacting conditions mentioned Example 3 F Example 20 parts of the dyestuff, obtained by condensation of ;l-amino-4-bromo-anthraquinone 2-sul- 20 parts 'of 1-amino-4-(p-aminoph enyD- :fonic acid with monoethyl-para-phenylene-di-l water.

power.

Example 4 20 parts of the dyestuff, obtained by Condensa-v tion of 1-amino-4-bromo-anthraquinone-2-sulfonic acid with para-phenylene-diamine thiosulfonic' acid, are treated with 40 parts of acetic anhydride in an aqueous solution according to Example 1. Then the acylated dyestuif is separated. It corresponds possibly to the formula:

o NHz SOsH s-soai 5 NH /,NH-OOOH3 The dyeing on wool from an acid bath is a blue shade of good fastness properties. stufi is distinguished The dyeby an excellent levelling Example 5 23.2 parts of the sodium salt of l-aminol- (p-amino-phenyl) amino-anthraquinone-2-sulfonic acid are dissolved in 5000 parts of water, cooled to 0-10? and 20 parts of chloro-acetylchloride are dropped into the solution with good stirring, the solution being maintained weakly alkaline throughout by the addition of sodium carbonate or sodiumacetate. The coloration of the solution is thereby changed to reddish blue.

The dyestuff formed is salted out and dried. It

corresponds to the'formula:

0 NHZ SOaH A) NIL-ONH-OO-Gfigr-Ol It is a bluish black powdenreadily soluble in The coloration of its solution in sulfuric acid is blue-green and the dyeing on wool from an acid bath is a clear blue shade.

By treating the s odiu'm sat or 'l-amino-l-(pamino-phenyl) -amino-anthraquinone-2-sulfonic acid with ,chloro-a'cetic anhydride according to l Example 1 the same dyestufi is'obtained.

Example 6 15 parts of the sodium salt of 1-amino-4- (m-amino-phenyl) -amino-anthraquinone2-sulfonic acid are dissolved in 3000 parts of water, the solution ,is cooled and 1 2 parts of chloroacetylrchloride are added, the solution being maintained weakly alkaline throughout. When the dyestuff formation is complete the dyestuff is salted out. It corresponds to the formula:

SOaH

It dyes wool full clear reddish blue shades, fast to fulling and light. The capacity for even dyeing of the dyestuif is very good.

Example 7 36 parts of the sodium salt of l-amino-4-(methylaminophenyl) -amino-anthraquinone-2-sulfonic acid are dissolved in 6000 parts of water and at 10, 20 parts of chloro-acetyl chloride are added. During the reaction the solution is maintained weakly alkaline by continually dropping in a solution of sodium carbonate. The resulting dyestuff dyes wool a clear powerful blue shade, It corresponds to the formula:

(H) NH2 By employing 34 parts of the sodium saltof l amino 4 (p-methyl aminophenyl) amino anthraquinone-2-sulfonic acid instead of the methylaminophenylderivative in Example 7 a dyestuif of similar good properties is obtained when following the same procedure. It corresponds to the formula:

' co-cmoi Example 9. V

16: parts of the sodium salt of 1-amino-4- mamino phenyl) -amino anthraquinone 2 sulfonic acid are dissolved in 3000 parts of water and 7 18 parts of dichloro-acetyl chloride are dropped into the solution with good stirring at 10. When the dyestufi formation is complete the dyestuff is salted out. It corresponds to the formula:

NHr (1.35

SOsH

ma cooncii It dyesv wool from an acid bath a, powerful and clear blue shade.

. Example 10 16.5 parts of the sodium salt of I-aminoA-(mamino phenyl) -amino anthraquinone 2" -su1- fonic acid are dissolved in about 3000 parts of water and 12. parts of c-chloro-propionyl chloride are introduced into the cooled solution which is maintainedalkaline throughout the reaction. The dyestuff is separated in-the customary manner. It corresponds to the formula:

O N H: H

so u This dyestufi also dyes wool a clear blue shade. I 7

Example 11 33.2 parts of the sodium salt of 1-amino-4-(pamino phenyl) -amino anthraquinone 2 sulfonic acid are dissolved in about 6000 parts of water at 10-20 and treated with 20 parts of the ethylic ester of chloro-carbonic acid; the solution is maintained alkaline throughout the reaction. The dyestufi is isolated as usual. It corresponds to the formula:

SOaH

It dyes wool from an acid bath equal pure blue shades.

Instead of the above-mentioned w-chloracyl derivatives w-bromoacetyb, w-ChIOIO- or w-bromopropionyl halides or the corresponding dihalogenacyl-chlorides can likewise be employed.

We claim:-

1. Process which comprises acylating an 1- amino 4 arylamino anthraquinone-2-sulfonic acid of the general formula:

(wherein R means a radical of the benzene or diphenyl series and X hydrogen, alkyl or cycloalkyl) in the presence of water.

2. Process which comprises acylating an 1- amino 4 arylamino anthraquinone-2-sulfonic acid of the general formula:

0 NH, H I meow V H p o NH- NHX (wherein X means hydrogen, alkyl or cyclo-alkyl) in the presence of water.

3. Process which comprises acylating l-amino- 4- (4'-amino-arylamino) -anthraquinone 2 sulfonic acid of the formula:

NH- NH,

presence of water;

wherein R means a radicle of the benzene or diby means .of 'an aiiphatic acylating agent in the I 4. Process which comprises acylating l-a'm ino- 4-(4'-amino-arylamino) -anthraquinone 2 sulfonic acid of the formula; v s

2'. NL NH.

by means of an acylating agent of the group consisting of the chloride and anhydride of an aliphatic halogen-containing carboxylic acid in the presence of water.

5. As new compounds the acid wool dyestuffs of g the anthraquinone series corresponding to the general formula:

phenyl series, and wherein Z stands for an alkylene or arylene radicle, while X means halogen when Y stands for hydrogen or alkyl and Z for alkylene or wherein X means hydrogen when Y stands for hydrogen and Z for arylene.

6'. As new compounds the acid wool dyestuffs of the anthraquinone series corresponding to the general formula 6) NHz CO. a1kyleneX wherein X stands for halogen and Y for hydrogen or alkyl.

7. As new compounds the acid Wool dyestuffs of the anthraquinone series corresponding to the general formula: 

